That is the chip of choice for exactly the reason you mentioned.
It adjusts injector pulse as it's main event for extra fuel.
Your quality tuners like East Coast will have a stock map on hand if shoit goes bad, and it can. I personally know the local Toyota dealer accidently wipped the father in-laws prado clean when recoding the injectors. They had to ring other customers to get someone to bring their prado in to copy it across lol..
Anyway. Lots of people who have mapped the ecu and lots of positive responses if you get it done right.
On the subject of throttle controllers.
Being electronic throttle those modules simply trick the ecu to thinking you have more, or less depending on your setting, pedal than you actually do..
So they don't adjust anything, but simply adjust the throttle voltage.
Similar to a maf voltage modifier.
Imo, jump online or call Harley from East coast performance tuning and have a chat. He'll run threw what happens and how. He's in Melbourne I'm pretty sure so not much further for you..